Drilling and pinning-on machine for pocket-knife scales and linings



wjE. FRWIROSE. DRILLING AND PINNING 0N MACHINE 0R POCKET KNIFE SCALES AND LININGS,

APPLICATION HLED DEC. 15, 1919. 1,367,831 5 Patentad Feb. 8, 1921.

3 SHEETS-SHEET l- INVENTOR W. E. PRIMRQSE.

DRILLING AND PINNING 0N MACH IN E FOR POCKET KNIFE SCALES AND LININGS. APPLICATION FILED DEC. 15, l9l9 Patented Feb. 8, 1921.

3 SHEETS-SHEET 3 w 78 E w @124 Q L i5 5;

. NVENTOR AZI'TORNEY' UNITED sTAr e s PAENT omen.

wiLLrAi/r n. PBIMROSE, or Bnrncfnron'r, oonnnorronr, ASSIGNOR r0 CHALLENGE CUTLERY CORPORATION, OF Bnrnornron'r, ooivivnorioor, 'A' CORPORATION OF CONNECTICUT.

DRILLING AND PINNING-ON MACHINE FOR POCKET-KNIFE SCALES AND LININGS.

Specification of Letters Patent.

Patented Feb. 8, 1921.

Application filed December 15, 1919. Serial No. 344,879.

T 0 all whom it may concern:

Be it known that 1, WILLIAM E. PRIM- nosn, a citizen of the United States, residing at 1661 Noble Ave, Bridgeport, county of F airfield, State of Connecticut, have invented an Improvement in Drilling and Pinning-On Machines for Pocket-Knife Scales and Linings, of which the following is a specification.

This invention has for its object to simplify the drilling and pinning together of the scales and linings of pocketlmives. Heretofore, in the making of covers for knife blades, the scales and linings have been assembled and united by hand and drill press, this method requiring several distinct operations :(1) assembling the scale and lining preparatory to drilling; (2) drilling a hole for a pin; drilling a second hole for the opposite pm; (at) count rsinking these holes; inserting and snipping pin in the first hole; and (6) repeating the operation on a pin in the second hole. lily invention combines these several operations into one semiautomatic machine operation.

lVith the above and other objects in view, I have devised a machine which will now be described and the'novel features of which will be pointed out in the appended claims.

In the accompanying drawings forming a part of this specification,

Figure 1 is a top plan view of the entire machine;

Fig. 2 a side elevation with a portion of the base removed;

Fig. 3 a fragmentary elevation partly in section, showing in detail certain parts of the mechanism;

Fig. 4 a fragmentary elevation of parts of the machine, taken at right angles to the showing of 8;

Fig. 5 a top plan of the revoluble table and its associated parts, showing a section or the casting which carries the spindle heads and their associated parts; and

Fig. 6 is a. perspective view of scale and lining drilled and pinned by my machine.

10 denotes a scale and 11 a lining to be assembled and drilled and pinned together at the points 12. In carrying my invention into effect the scales are placed at the right hand side of the machine and the linings at the left. Preferably, a platform a base 19 for rotatable table 20.

is built on each side level With the table sothat the scales and linings can be slid along tne center and assemoied. The assemoiing is done by hand during the downthus saving 1 linings.

The main frame 13 comprises a casting 14 carrying a vertical slide 15 to which are attached the spindle heads 16, and also carrying a pivot 17 for the foot lever 18, and The set screw 21 holds pivot'17 against displacement. The vertical slide has a dovetail connection with the casting .of the main frame and is arranged to reciprocate thereon. The foot lever, which is the actuating mechanism for the slide, engages it with cylindrical faces working. in a rectangular hole in the slide. There is also a rectangular hole of larger dimensions in the casting for the passage and unrestricted operation of the foot lover. The motion of the slide is limited by a lug 22 on the slide contacting with adjustable stop screws 23 on the casting. The spindle heads 16 are right and left, but are otherwise similar. They are attached to the slide 15 at the opposite ends thereof by screws 24 in elongated slots 25, this permitting of their adjustment sidewise by means of adjusting screws 26 and brackets 27. The alinement is preserved by tongue and groove connections in the seating faces of the slide and spindle heads; Each spindle head has two bearings for its drill spindle 28, a bearing for wire spindle 29, and a bearing for the gearing represented generally at 30 for imparting an oscillating motion to the wire spindle 29, this feature of my invention to be fully described hereinafter.

Each spindle head carries a drill spindle.

The drill spindles are similar, except that drill spindle in its bearings. Further, each spindle head carries a wire spindle, these being duplicates of each other. The wire spindles are free to reciprocate and to oscillate in their bearings and to the upper endof each an L-shapcd bracket 35 is attached, the brackets being of suificient size to prevent their passage through the spindle holes in the spindle heads. These L- shaped brackets carry feed cams 36 and 37. Springs 38 normally hold cams 36 in gripping position on the wires 40 which are fed from the supply to the covers. Springs 39 are attached to each side of the bases of brackets 35 and exert pressure on the outer surfaces of earns 37 during the downward movement of the wire spindles. The lower end of each wire spindle is of reduced diameter and passes through a sliding pivot block 41 in which it is free to oscillate. Each pivot block is retained on its wire spindle by two nuts 42, and carries levers 43 pivotally'attached thereto at 44 and spring 45 which normally holds the snips 46 in inoperative position. Compression springs 47 are seated between collars 48 through which the wire spindles are arranged to slide and the pivot blocks, and normally hold the pivot blocks and collars in their most distant positions. The collars 48 are fixedly seated in the bottom parts of the bearings for the wire spindles, and their lower ends extend below the lower faces of the spindle heads and have thereon shoul- 49 in yoke collars 5O screwed to the lower surfaces of the spindle heads.

Upper wire feed brackets 51, one over each wire spindle, are similar. Each is attached to the upper part of casting 14 by screws in elongated slots, as shown at 52, for lateral adjustment, and each has tongue and groove connection for alinement. Each upper feed bracket carries a threaded adjustable stop 53 set in line with each of the wire spindles and located immediately above the feed cams 36, an Lshaped tension bracket 54 with round shank 55 freely mounted to rotate in its bracket 51, but retained therein by screw 56, and carrying tension blocks 57 and 58 adjusted by screw 59.

Guide pulleys 61, two on each side, are mounted on right and left brackets 62 attached to casting 14 and are arranged for adjustment to any required position to guide the belts from the source of power supply to the driving pulleys 31.

- To facilitate the entry and passageof the wires through the drilled linings and scales and to prevent chipping of the scales at the edges of the holes, oscillatory motion is given to each of the wire spindles. Spur gears 63 on collars 32 rotating with the drill spindles drive the spur gears 64 which are keyed to the spindles of crank plates 65. Connecting rods 66 extend from the crank plates to pins 67 on L-shaped brackets 35, thus converting rotary motion of the drill spindles to oscillatory motion on the wire spindles, due to the crank pins on the crank plates having smaller arcs of motion than the pins on the brackets. ,T he pins on the brackets are made sufliciently long to allow for their sliding through their bearings in the connecting rods as these parts change their relative positions in the operation of the machine. The connecting rods are guided in horizontal plane by engaging slots in the spindle heads.

A bolster 68 is clamped to the base 19 with screws and is bored in any convenient manner to receive the rotating table.

The rotating table 20 is turned to lit and rotate in the bolster. It has two stop notches 70 in its periphery which engage ratchet finger 71 to locate the two working stations. There is a rectangular recess 72 in its middle through which the finished covers drop. On its upper surface are two sets of devices for holding two covers, one set positioned for drilling and one for pinning. The holding devices are simila and each consists of a fixed stop 7 3 having therein a notch in the shape of a V to retain one end of the cover, a curved extension 74 for guiding the cover to position and an elongated screw slot 75 permitting the stop to be adjusted to different lengths of covers, further adjustment being obtained by a number of screw holes properly spaced in the table. A tongue on the under surface of the stop (not shown) engages in a slot in the table and preserves the alinement. The second part of each holding device is the finger 7 6 having therein a notch in the shape of a V and anextension similar to stop 73 and for the same purpose. This finger is pivoted on the adjustable pivot member 77 so that it can be opened with relation to stop 73 and against the pressure of spring 78 to insert the covers to position between the two We. Pivot member 77 is arranged for adjustment similar'to stop 73. The adjustment of these parts by the means described adapts the holding device to covers varying from two and one-half to five and one-half inches in length.

Four grooves are cut in the surface of the table to accommodate the burs and protruding drills and pins. Two handles 79 are inserted in the table to rotate it. A workplate 80 extends outward from the front of the'table and on this the covers are assembled and slid into the holders. A plate 81 beneath the'work plate 80 engages a groove in the table and holds it against upward forces in withdrawing the drills.

It is to be understood that the distance between drill spindle and wire spindle on each of the right and left spindle heads is the same and is also equal to the distance from point of drilling to point of wiring at either side of the table of Fig. 5. The spindle heads are parallel so that the distance be tween the drill spindles is equal to the distance between the wire spindles. Adjustment of the holders requires adjustment of the spindle heads.

In operating the machine the assembled parts are pushed forward into the holding device stationed toward the front of the table, the end against the fixed stop going in first and the thumb of the left hand helping to open the spring jaw as the parts are set in place. The foot lever is now pushed forward, first by a quick motion bringing the drills to work, then by a steady motion while the drills are working, and last by a sharp thrust to cut off the pins. It is during this downward stroke of the spindle heads and associated parts that the hands are free to assemble new parts for the covers. The foot is witl drawn, carefully at first, to be sure the drills do not stick, and then rapidly. In starting to work on an empty machine, a cover is first placed in the holder toward the front and the foot lever is put through a journey to drill the cover. The table is now revolved a full half turn and pressed back against the stop. New parts are inserted in the holder now at the front of the table, and on the next journey of the foot lever the drilled parts in the holder at the back of the table are pinned and the new parts drilled. After the next half turn of the table the pinned cover is pushed out of the front holder and through the rectangular recess in the table by other new parts being inserted in position for drilling. It is apparent that the operation is a continuous one. The ends of the pins in the covers are riveted by a separate operation forming no part of the present invention.

There are two sources of motion on the machine, (1) the foot lever, and (2) the belt drive. The foot lever raises and lowers the spindle heads and their associated spindle mechanism, certain parts of the mechanism being capable of small independent sliding motions. The belt drive rotates the drill spindles and through the medium of the gearings and connecting rods 66 gives the desired oscillatory movement to the wire spindles.

The tension blocks 57 and 58 and their brackets 54 do not slide, but are rotatably mounted upon wire feed brackets 51. The wires are threaded down through the tension blocks. the threaded adjustable stops 53, the feed cams 36 and 37, and the wire spindles 29. Starting at the top of a stroke a push on the foot lever'moves the spindle heads downward, the grip cams 37 gripping the wires by reason 01 their centers being so arranged as to bring their peripheries together with the aid of the flat springs 39, and carrying them downward through the tension blocks. These feeding movements, assisted by the oscillation of the wire spindles, thrust the ends of the wires through the drilled holes in the covers'until the jaws of the snips rest on the covers. Thus the motion of the wire spindles, trunnions, feeding cams 36 and 37, and the wires held by them is arrested, but the spindle heads continue downward by a sharp thrust on the foot lever, forcing the beveled shoulders of the collars 48 between the arms of the levers carrying the snips, thereby closing the jaws and snipping the wires while they are in resting position. 011 the return stroke the spindle heads begin to move up first, the wire spindles, pivot blocks, and wires remaining at rest on account of pressure of springs 47 until L-shaped brackets 35 are engaged by the upper faces of the spindle heads adja cent the spindle holes. The levers carrying the snips are at the same time being forced off of the collars/i8 allowing the springs to open the jaws. The spindles, picked up by the L-shaped brackets, now travel up with the spindle heads, the wires being gripped and carried by the cams 36, the upward motion having released cams 37, against the sliding resistance of the tension blocks until the upper projections of the cams 36 strike the tapered ends of the adjustable screws 53, thus opening the cams against the actions of springs 38 and, con sequently, releasing the wires. The wires remain stationary for the remainder of the stroke. The length of wire which is fed through on each stroke is easily regulated by setting the adjustable stops, up for an increase and down for a decrease.

The drill spindles are driven by two round belts at a speed of approximately 2200 R. P. M. The drills are inserted in the chucks to the proper distances for piercing the work and the spring jaws of the chucks are ground to angular cutting edges to act as countersinks. As the spindle heads are depressed, 115 the drills are rotated and forced through the covers, the springs 34: compressing solid.

As the drills break through, the springs extend, thus giving a very sensitive advane to the spindles. This prevents the scales from 120 chipping and also removes the bur on the upper surfaces by slightly countersinking with the chuck points, thus producing clean drilled holes. Further, cushions are afforded to rest the drill spindles until the wires 125 have been snipped.

Having fully described my invention, what I claim 'is:

1. A machine of the character described, comprising right and left reciprocating spin- 130 dle heads each carrying a drill spindle and a wire spindle, and a revoluble table having means for holding knife covers to be drilled and wired.

2. A machine of the character described, comprising right and left reciprocating spindle heads adjustable toward and from each other and carrying drill and wire spindles, and a revoluble table having ad ustable means for holding knife covers in 'alinement with the spindles of the spindle heads.

comprising right and left reciprocating spindle heads adjustable toward and from each other and carrying drill and wire spindles, right and left wire feed brackets adjustable toward and from each other for alinenient with the wire spindles, and a revoluble table having adjustable means for holding knife covers in alinement with the drill and. wire spindles and wire feed brackets.

5. In a machine of'the character described,

right and left reciprocating spindle heads adjustable toward and from each other .and carrying drill and wire spindles, in combination with wire feed brackets adjustable for alinement with the wire spindles.

6. In a machine of the character described, a casting carrying a vertical slide having right and left spindle heads adjustably attached thereto for transverse movements, each spindle head having mounted therein a wire spindle and a drill spindle, right and left wire feed brackets adjustably attached to the casting for transverse movements, in combination with a revoluble table on which are adjustably located two holding devices, the spindles, brackets and holners being adjustable to alinement.

7 In a machine of the character described, the combination of a drill spindle and a wire spindle, the drill spindle operated from a drive pulley and geared with a crank plate having a crank pin carrying a connecting rod, the rod engaging a pin on a bracket on the wire spindle, whereby the rotary motion of the drill spindle is converted to oscillatory motion on the wire spindle.

8. In a machine of the character described, a revoluble table carrying holders for the work, each holder comprising a fixed stop and a pivoted spring pressed finger adj ustable on the table toward and from each other, each stop and finger having a curved extension for facilitating the insertion of the covers, and a V-shaped notch for retaining them in position. c

9. In machine of the character described,

a revoluble table carrying holders for-the work, each holder comprising a fixed stop and a pivoted spring pressed finger adjustable on the table toward and from each other, each stop and finger having a curved extension for facilitatingthe insertion of the covers and a V notch for retaining them in position, the table being also provided with a rectangular recess through which the pinned covers drop.

10. In a machine of the character described, a base, a casting on the base, a foot lever mounted on the casting and extending through an enlarged rectangular hole therein, a vertical slide socketed in the casting and operatively connected with the foot lever, right and left spindle heads adj ustably attached for lateral movements to the vertical slide near its ends, and a wire spindle and a drill spindle carriedby each of the right and left spindle heads, the right and left spindle heads being parallel, as and for the purpose specified.

11. In a machine of the character described, a base, a casting on the base, a foot lever mounted on the casting and extending through an enlarged rectangular hole therein, a vertical slide socketed in the casting and operatively connected with the foot lever, right and left spindle heads adjustably attached for lateral movements to the vertical slide near its ends, and a wire spindle and a drill spindle carried by each of the right and left spindle heads, the right and left spindle heads being parallel, and right and left wire feed brackets adjustably attached for transverse movements to the upper portion of the casting, as and for the purpose specified.

. 12. In a machine of the character described, a base, a casting on the base, a foot lever mounted on the casting and extending through an enlarged rectangular hole therein, a vertical slide socketed in the casting and having a rectangular hole engaging with cylindrical faces on the foot lever, right and left spindle heads adjustably attached for lateral movements to the vertical slide near its ends, a wire spindle and a drill spindle arried by each of the right and left spindle heads, the right and left spindle heads being parallel, and right and left wire feed brackets adjustably attached for transverse movements to the upper portion of the casting, as and for the purpose specified.

13. In a machine of the character described, a vertical slide operably engaged by anupright casting and having adjustably attached thereto right and left spindleheads arranged for lateral movements, each of the spindle heads carrying a wire spindle and a drill spindle, reciprocation of the vertical. slide operating all of the spindles in unison.

14. In a machine of the character described, a vertical slide operably engaged by an upright casting and having adjustably attached thereto right and leftspindle heads arranged for lateral movements, each of the spindle heads carrying a wire spindle and a drill spindle, reciprocation of the vertical slide operating all of the spindles in unison, the wire spindles carrying at their lower ends pivot blocks with levers and snips, and at their upper ends L-shaped brackets having feed earns.

15. In a machine of the character described, a vertical slide operably engaged by an upright casting and having adjustably attached thereto right and left spindle heads arranged for lateral movements, eachof the spindle heads carrying a wire spindle and a drill spindle, reciprocation of the vertical slide operating all of the spindles in unison, the wire spindles carrying at their lower ends pivot blocks with levers and snips, and at their upper ends L-shaped brackets having feed cams, and the drill spindles carrying compression springs and drills.

16. In a machine of the character described, a vertical slide operably engaged by an upright casting and having adjustably attached thereto right and left spindle heads arranged for lateral movements, each of the spindle heads carrying a wire spindle and a drill spindle, reciprocation of the vertical slide operating all of the spindles in unison, in combination with right and left wire feed brackets laterally adjustable on the upright casting for alinement with the wire spindles.

17. In a machine of the character described, a vertical slide operably engaged by an upright casting and having adjustably attached thereto right and left spindle heads arranged for lateral movements, each of the spindle heads carrying a wire spindle and a drill spindle, reciprocation of the vertical slide operating all of the spindles in unison, in combination with right and left wire feed brackets laterally adjustable on the upright casting for alinement with the wire spindles and a revoluble table having holding devices adjustable to hold the covers being operated upon in alinement with the drill and wire spindles.

18. In a machine of the character described, a vertical slide operably engaged by an upright casting and having adjustably attached thereto right and left spindle heads arranged for lateral movements, each of the spindle heads carrying a wire spindle and a drill spindle, recipro ation of the vertical slide operating all of the spindles in unison, driving pulleys for rotating the drill spindles, spur gears fixed on said spindles and keyed to crank plates having crank pins carrying connecting rods, L shaped brackets mounted on the wire spindles and carrying pins engageable with the connecting rods. whereby rotary motion of the drill spindles is converted to oscillatory motion on the Wire spindles, as and for the purpose specified.

19. In a machine of the character described, a vertical slide engaged with a foot lever and arranged for reciprocation on an upright casting, and having right and left spindle heads adjustably attached thereto for transverse movements, each of the spindle heads having a Wire spindle and a drill spindle located therein in fixed vertical alinement at the same relative points in each instance, the spindle heads arranged in par allel relation, and the wire spindles parallel. with the drill spindles, reciprocation of the vertical slide operating all of the spindles in unison.

20. In a machine of the character described, a vertical slide engaged by a foot lever and arranged for reciprocation on an upright casting, and having right and left spindle heads adjustably attached thereto for transverse movements, each of the spindle heads having a wire spindle and a drill spindle located therein in fixed vertical alinement at the same relative points in each instance, the spindle heads arranged in parallel relation. and the wire spindles parallel with the drill spindles, reciprocation of the vertical slide operating all of the spindles in unison, and right and left Wire feed brackets adjustably attached to the upright casting for transverse movements for alinement with the wire spindles.

21. In a machine of the character described, a vertical slide engaged by a foot lever and arranged for reciprocation on an upright casting, and having right and left spindle heads adjustably attached thereto for transverse movements, each of the spindle heads having a wire spindle and a drill spindle located therein in fixed vertical alinement at the same relative points in each instance, the spindle heads arranged in parallel relation, and the wire spindles parallel with the drill spindles, reciprocation of the vertical slide operating all of the spindles in unison, right and left Wire feed brackets adjustably attached to the upright casting for transverse movements for alinement with the wire spindles, and a revoluble table having holders adjustable thereon for holding the covers operated upon in alinement with the respective sets of spindles.

22. In a machine of the character de scribed a vertical slide engaged with a foot lever and arranged for reciprocation on an upright casting and having right and left spindle heads adjustably attached thereto for transverse movements, each of the spindle heads having a wire spindle and a drill spindle located therein in fixed vertical alinement at the same relative points in each instance. the spindle heads arranged in parallel relation and the wire spindles parallel. with the drill spindles, reciprocation of the vertical slide operating all of the spindles in unison, driving pulleys rotating the drill spindles, spur gears fixed on said drill spindles and keyed to crank plates having crank pins carrying connecting rods, L-shaped' ciprocating motion of the latter, a drill spindle and a'wire spindle carried by each spindle head, means carried by the drill spindles to receive power to rotate the same, and means interposed between each drill spindle and wire spindle whereby rotary motion of the drill-spindle is converted to oscillatory motion on the wire spindle, a revoluble table directly below the spindles and having holding devices adjustably located thereon for alinement with the respective spindles, and wire feed brackets adjustably carried by the upright casting and adapted for alinement With the Wire spinles.

In testimony whereof I aflix my signature.

WILLIAM E. PRIMROSE. 

